Looking for anomalous gamma-gamma-H and Z-gamma-H couplings at future linear collider

Details Looking for anomalous gamma-gamma-H and Z-gamma-H couplings at future linear collider Looking for anomalous gamma-gamma-H and Z-gamma-H couplings at future linear collider

1999-02-16

arxiv.org/abs/hep-ph/9902362v2

Phys.Rev.D60:113005,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 33 pages, 16 eps figures, extended section 5

Scientific paper

10.1103/PhysRevD.60.113005

We consider the possibility of studying anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices through the process e-gamma--> e-H at future e-gamma linear colliders, with Sqrt(S)=500-1500 GeV. We make a model independent analysis based on SU(2)xU(1) invariant effective operators of dim=6 added to the standard model lagrangian. We consider a light Higgs boson (mostly decaying in bar(b)-b pairs), and include all the relevant backgrounds. Initial e-beam polarization effects are also analyzed. We find that the process e-gamma--> e-H provides an excellent opportunity to strongly constrain both the CP-even and the CP-odd anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices.

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